The sermon explores the biblical foundations, purposes, and practice of fasting. It highlights two key reasons for fasting: in the Old Testament, fasting was linked to mourning for sin and repentance, while in the New Testament, it became a means of seeking God's guidance. Jesus’ teaching on fasting emphasizes sincerity, instructing believers to fast without seeking attention but instead maintaining their daily routines. The sermon presents five spiritual purposes for fasting, including strengthening prayer, seeking God's guidance, humbling oneself, overcoming temptation, and expressing love and worship for God. The congregation is invited to fast together on specific Thursdays during Lent, culminating in a shared meal and prayer. The message ultimately points to Jesus as the true sustenance of life, urging believers to find their satisfaction in Him.